Roller jack



c. F. STALCUP.

ROLLER JACK. APPlTICATION FILED AUGJQ, 1 920- I 1,405,349, Patented Jan. 31, 1922.

I 3 SHEETS-SHEET N I C. F. STALCUP.

ROLLER JACK.

APPLICATION FILED AUG.19,1920.

Patented Jan. 31 1922. I

3 SHEETS-SHEET 3.

' Patented J an. 31, 1922.

3 $HEETSSHEET I.

UNITED .STATES PATENT OFFICE.

CLARENCE-F. STALCUP, OF SIOUX FALLS, SOUTH DAKOTA.

ROLLER JACK.

Specification of Letters Patent. P t nt d J 31, 1922,

Application filed August 19, 1920. Serial No. 404,575.

To all whom it may concern Be it known that I, CLARENCE F.'STAL- CUP, a citizen of the United States, residexpedite the jacking up or lifting of the automobile for the purposes of repair.

' A further object is to provide a jack hav ing a long horizontal body in which the operating mechanismis located at the end opposite from the lifting end, and a still further aim of the invention is to provide a lifting mechanism having an independ-' ently operable setting device carried thereby and by which the jack may be initially set or adjusted to the automobile or other body preliminary to actuating the lifting mechanism.

The invention further resides in the features of construction and-the arrangements and combinations of parts hereinafter described and claimed, reference being made to the accompanying drawings wherein:

Figure l is a side view of the improved jack, a portion being broken away;

Figure 2 is a transverse section thereof through the forward end of the jack;

Figure 3 is a plan view of the same as viewed in Figure 1; i I

Figure 4 is an enlarged side elevat on of the operating mechanism for the lifting device; I

Figure 5 is a fragmentary slde view of the operating end of the jack; and Figure 6 is a transverse section thereof one line 6--6 ,of Figure 5.

Referring more in detail to the drawings, the numeral 1 designates a pair of longltudinal side frame members pivoted at theirrear ends by bolts 2to the inner and opposite sides of the U-shaped stirrup 3 having laterally extended supports 4 1n WhlCh the casters 5 are mounted. Also secured at one end by these bolts 2 are the component parts of a quadrant or segmental rack 6, and pivoted to the side members concentrically with the rack is a short lift ng lever 7 and a long operating or controlling lever 8. The long operating lever has slidably mounted thereon aiyoke or sleeve 9 which embodies two yoke or collar portions one of which is adapted to be engaged over the upper end of the lifting lever 7, as is depicted in Figures 1 and 5. ,Sleeve 9 is carried 011 the lower end of an actuating rod 10 which X is guidingly mounted on the operating lever 8' and urged in a downward direction by an encircling spring 11 while it may be retracted upwardly by means of a lever 12,

.pivoted to the operating lever and connectedto the rod 10 by the link 13.

Obvlously then, with the sleeve embracing the upper end of the lifting lever the latter may be swung to any predetermined posit1on and there held by meansof a pawl 14 carried by said lifting lever and coacting with. the rack 6. Pawl 14 is provided with a depressible tail 15'adapted to be engaged by'either branch of the lower forked terminal of the pawl releasing rod 16, the latter being slidably supported on theope'rating lever 8 and normally held raised by the spring 17. In the position illustrated in Figure 1 branch terminal 18-is designed to engage the tail -15 and thus release the pawl, while in the position indicated in Figure 5, the branch terminal 19 is adapted tofunction. i

The forward ends of side frame ,members 1 are pivoted to one corner of a .tri-

angular frame 20 which is mounted on an axle 21, supported by wheels 22, and is adapted to be swung upwardly by a pair of link bars 23 connecting lever 7 with the lower most corner of said triangular frame 20. A pair of body plates 24 are secured to the side bars 1 and braced apart to form a substantial support for guiding and steadying the lift or supporting member.

This comprises a long horizontal beam 25 which inclines upwardly at its forward end between the body plates 24 to provide a body supporting part 26 which rides on a roller 27. A supporting head plate 28 is swiveled on the supporting part 26 and on the latter is also formed a forward and depending oot 29 designed to engage beneath the axle or hub.

In operation, the forward end of the jack is moved beneath the vehicle or part to be elevated, the lift or supporting member then shifted lengthwise, by pushing on the foot piece, 30 on the rearwardly projecting end of the beam 25, which causes the lift head to ride up the roller until the head engages the vehicle.v ,t Then bymeans of the lock pawl 31, pivoted on cradle or stirrup 3 and coacting with teeth 32 on the beam 25 the lift head is maintained in its elevated position while the operating handle is moved to raise the vehicle by swinging the triangular frame 20. Jlhis actuation lifts on the forward end of the side frame member and,

' consequently, the body plates 24'and head the jack either pawl 14 or 31, preferably the latter, may be disengaged by pressing thereon with the foot.

The operation is simple and positive with but little effort on the part of the operator,

requiring firstly, a push with the foot on pedal to set or adjust the lifting head to the object to be lifted and secondly, manipulation of the lever 8 to effect lifting of the object, and while the invention has been described in connection with vehicles its utility is not limited to this class of objects.

- What is claimed is;

1. A jack comprising substantially horizontal side frame members, a transverse member formedintermediately with a stirrup in which the rear end of the frame members are mounted, wheels supporting the transverse member, a lifting member slidably and horizontally disposed between the side frame members and having its forward end upwardly inclined to provide a liftin head, means on which the inclined hea rides for elevating the same, the rear end of said lifting member extending beyond the side members and formed with a series of notches, a pawl engageable in the notches of said lifting member, and means for elevating the side members.

2. A jack comprising substantially horizontal side frame members, a transverse member formed intermediately with a stirrup in which the rearend of the frame members are mounted, 'wheels supporting the transverse member, a lifting member slidably and horizontally disposed between the side frame members and having its forward end upwardly inclined to provide a lifting head, means on which the inclined head rides for-elevating the same, means for adjusting the lifting member, and means for ilevating the forward end of said side memers.

3, A jack comprising substantially horizontal side frame members, a transverse member formed intermediately with a stirrup in which the rear end ofthe frame members are mounted, wheels supporting the transverse member, a lifting member slidincense ably and horizontally-disposed between the side frame members and having its forward end upwardly inclined to provide a lifting head, means on which the inclined head rides for elevating the same, a forward wheeled axle, a triangular frame on the latter, said side members pivoted to one corner of the frame at their forward ends, and means for rocking the frame.

4. A jack comprising substantially horizontal side frame members, a transverse member formed intermediately with a stirrup in which'the rear end of the frame, members are mounted, wheels supporting the transverse member, a lifting member slidably andhorizontally disposed betweenthe side frame members and having its for-f ward end upwardly inclined to provide lifting head, means on which the inclined head rides for elevating the same, a forward wheeled axle, a triangular frame on, the, latter, said'side members pivoted to one corner of the fra I "e at their forward ends,a lifting lever pill-i btally' disposed on the rear end portion off the side members, and means connecting the lever to one corner of the frame.

5. In a jack, an elongated, horizontally disposed body, lifting means arranged at one end thereof and adapted for being adjusted to the object to-be lifted, means located at the opposite end ofthe body for adjusting said lifting means, and other means also located at said latter end of the body and operable'independently of the sec- Y 0nd means for raising the body and there- 100 with the lifting means after adjustment of the latter and while the liftingmeans remains in the adjusted position.

.6. In a jack, an elongated, horizontally disposed body, horizontally slidable lifting means arranged on the frame and adapted for being adjusted to the object to be lifted, foot controlled means at the opposite-end of the body for adjusting the lifting means and manually controlled means independ- 110 ently operable to bodily raise the lifting means while the latter remains in its adjusted position relative to the object.

7. In a jack, a frame, longitudinally slidable and rigidly formed lifting means 115 mounted thereon and formed for engage ment with the object to be raised, means whereby upon sliding of saidmeans same will move longitudinally and lift the object, and means to raise the frame with saidlifting means maintaining a fixed relation to the frame. a

8. In a jack, a frame, lifting means longitudinally slidable on the frame and having a rigid part borne thereby and formed to engage the object to be raised, means whereby-upon sliding of said lifting means the rigid part will move longitudinally there with and engage the object, means to slide said lifting means and means to subsequently bodily raise the lifting means while the latter maintains its said fixed-relation to the object.

9. In a jack, an elongated frame, adjustable means at the front of the frame to engage the Object to be lifted, means to operate and releasably hold said first means locked from and at the rear end of the frame, and means to raise the front of-the frame operable from-the rear end thereof.

10. In a jack, a wheeled axle, an elongated frame, means to suspend the front end of the frame from the axle, a lifting member adjustable on the frame, and means to actuate the suspending means to thereby raise the front end of the frame and therewith the lifting member.

11. In a jack, a wheeled axle, an elongated frame, means to suspend thefront end of the frame from the axle, a lifting member adjustable on the frame, a wheeled rear member to which the rear end of the frame is pivoted, and means to actuate the suspending means to thereby raise the front end of the frame and therewith the lifting member. I

12. In a jack, an elongated frame, lifting means at the front end of the'frame, means to adjust said lifting means operable from the rear end of the frame, and means to bodily lift the front end of the frame from the rear end of the frame and with the lifting means maintaining a fixed relation to the frame.

In testimorcljy whereof I affix my si ature. LARENCE F. gn

STALCUP. 

